使用 Mocha 测试 Angular 返回错误

Question

我使用

安装了 Mocha 和 Shouldjs

npm install -g mocha

npm install -g should

测试我的 Angular 应用程序。我从here复制了一个测试，内容如下：

describe('addition', function () {
 it('should add 1+1 correctly', function (done) {
   var onePlusOne = 1 + 1;
   onePlusOne.should.equal(2);
   // must call done() so that mocha know that we are... done.
   // Useful for async tests.
   done();
 });
});

但是，当我使用

运行测试时

mocha mytest.js

我收到此错误：

  addition
    1) should add 1+1 correctly


  0 passing (7ms)
  1 failing

  1) addition should add 1+1 correctly:
     TypeError: Cannot call method 'equal' of undefined
      at Context.<anonymous> (C:\wamp\www\myproj\v4\static\src\app\project\overview\overview.spec.js:4:27)
      at Test.Runnable.run (C:\Users\Imray\AppData\Roaming\npm\node_modules\mocha\lib\runnable.js:218:15)
      at Runner.runTest (C:\Users\Imray\AppData\Roaming\npm\node_modules\mocha\lib\runner.js:374:10)
      at C:\Users\Imray\AppData\Roaming\npm\node_modules\mocha\lib\runner.js:452:12
      at next (C:\Users\Imray\AppData\Roaming\npm\node_modules\mocha\lib\runner.js:299:14)
      at C:\Users\Imray\AppData\Roaming\npm\node_modules\mocha\lib\runner.js:309:7
      at next (C:\Users\Imray\AppData\Roaming\npm\node_modules\mocha\lib\runner.js:248:23)
      at Object._onImmediate (C:\Users\Imray\AppData\Roaming\npm\node_modules\mocha\lib\runner.js:276:5)
      at processImmediate [as _immediateCallback] (timers.js:345:15)

谁能看看如何解决这个问题？

Answer 1

查看他们似乎需要将原语包装在 () 中以使其工作的文档：

https://github.com/shouldjs/should.js

var should = require('should');

(5).should.be.exactly(5).and.be.a.Number;

还有：

Should(5).be.exactly(5)

会工作的。

所以尝试将您的代码更改为：

(onePlusOne).should.equal(2);